The i5-2500K provides a better cost/benefit ratio than the i7-2600K, and you still get an unprecedented overclocking capability. If this machine is for gaming, then gaming performance (if you increase image quality settings) is dictated mainly by the video card, not by the CPU (unless you use a low-end CPU), and therefore you can save some money buying the new Core i5-2500K instead of the Core i7-2600K and invest the difference in a more expensive video card, such as the HD6950.

I would swap the SSD with a vertex 2.

I would get a better and smaller PSU. Seasonic X Series 560W is more than enough.

Great motherboard, but you also need to get the more expensive pro if you want dual GPU.

If you're positive you don't want to upgrade to dual GPU (and from the parts it looks so) then I recommend the Fractal Design R3 case.

The i5-2500K provides a better cost/benefit ratio than the i7-2600K, and you still get an unprecedented overclocking capability. If this machine is for gaming, then gaming performance (if you increase image quality settings) is dictated mainly by the video card, not by the CPU (unless you use a low-end CPU), and therefore you can save some money buying the new Core i5-2500K instead of the Core i7-2600K and invest the difference in a more expensive video card, such as the HD6950.

I would swap the SSD with a vertex 2.

I would get a better and smaller PSU. Seasonic X Series 560W is more than enough.

Great motherboard, but you also need to get the more expensive pro if you want dual GPU.

If you're positive you don't want to upgrade to dual GPU (and from the parts it looks so) then I recommend the Fractal Design R3 case.

Remember that the 2600K is a 4 core with Hyper threading while the 2500K is a 4 core without hyper threading. So for heavy work like photoshop and thing like that the 2600K is a step better.

FInal build: I decided to go w the vertex 2 ssd, storm scout case and the gtx 570. also went for a lower watt psu. Credit card at the ready just wanting to make sure all parts go well together, will fit in case, or any last suggestions / comments. THX!!

Looks much better than your original list. Like it was said above - if you have a little wiggle room with your budget you might want to consider a aftermarket CPU. The 2600k has lots of OC headroom and it would be a shame to leave it at stock clocks on a stock heatsink. Unlock some of that extra performance :)